Includes half True HEPA and half Activated Carbon Filters in one for enhanced air-cleaning power | True HEPA filter captures 99.97% of airborne particles as small as 0.3 microns, including pollen, ragweed and other allergens, viruses, germs, dust mites, mold spores, pet dander and cigarette smoke | Antimicrobial treatment provides built-in protection from the growth of odor causing bacteria, mildew, and fungi on the HEPA filter | Activated carbon filter reduces odors and VOCs | Compatible with AeraMax PRO 2 Air Purifier. One year filter life (depending on use)